WNT6 is a member of the Wnt family of secreted signaling proteins that plays essential roles in embryonic development, tissue patterning, and adult tissue homeostasis[1]. Like other Wnt proteins, WNT6 activates both canonical (Wnt/β-catenin) and non-canonical (Planar Cell Polarity and Wnt/Ca²⁺) signaling pathways, making it a versatile regulator of cellular processes including proliferation, differentiation, migration, and polarity[2].
In the nervous system, WNT6 is critically involved in neural crest cell migration, cortical neuron positioning during development, and oligodendrocyte differentiation[3]. Dysregulation of WNT6 signaling has been implicated in neurodegenerative diseases including Alzheimer's disease and Parkinson's disease, as well as in cancer progression[4].
The WNT6 gene is located on chromosome 2q35 and encodes a 349-amino acid secreted protein[1:1]. The protein contains:
WNT6 activates multiple signaling pathways[2:1]:
WNT6 is a key regulator of neural crest cell development[5]:
WNT6 plays important roles in cortical development[6]:
WNT6 signaling is involved in oligodendrocyte lineage development[3:1]:
WNT6 is involved in synaptic development and function[7]:
During development, WNT6 is expressed in[5:1]:
In the adult brain, WNT6 expression is maintained in[8]:
Allen Human Brain Atlas — WNT6 Expression: Expressed in subventricular zone (neural stem cell niche), hippocampus (dentate gyrus), and cortex. Oligodendrocyte precursor cell expression throughout white matter. Dynamic regulation during neural stem cell differentiation. [[6:1]](https://pubmed.ncbi.nlm.nih.gov/30658921/) [[8:1]](https://pubmed.ncbi.nlm.nih.gov/29429945/)
WNT6 and Wnt signaling are implicated in Alzheimer's disease pathophysiology[9]:
Key observations include:
WNT6 plays complex roles in PD[10]:
WNT6 is involved in blood-brain barrier (BBB) function[11]:
WNT6 modulates neuroinflammatory responses[12]:
WNT6 is frequently overexpressed in cancers[13]:
Dysregulated WNT6 may contribute to:
Therapeutic approaches include[4:1]:
Nusse R, et al. Wnt proteins: from development to regeneration. Trends in Cell Biology. 2023. ↩︎ ↩︎
Povyshi N, et al. Non-canonical Wnt signaling in nervous system development. Neuroscience. 2020. ↩︎ ↩︎
Torkowski A, et al. Wnt signaling in oligodendrocyte differentiation. Glia. 2017. ↩︎ ↩︎
Chen L, et al. Wnt signaling in neurodegenerative diseases. Molecular Neurobiology. 2022. ↩︎ ↩︎
Barriga EH, et al. Wnt proteins in neural crest cell development. Developmental Biology. 2016. ↩︎ ↩︎
Kuwahara A, et al. Wnt signaling in neural stem cell self-renewal. Developmental Biology. 2019. ↩︎ ↩︎
Wang J, et al. Wnt signaling in synaptic formation and function. Frontiers in Cellular Neuroscience. 2015. ↩︎
Song L, et al. Wnt signaling in adult neurogenesis. Cell Stem Cell. 2018. ↩︎ ↩︎
Marquer C, et al. Wnt/beta-catenin signaling in Alzheimer's disease. Journal of Alzheimer's Disease. 2021. ↩︎
Zhang X, et al. Wnt signaling in Parkinson's disease. Molecular Neurobiology. 2021. ↩︎
Liebner S, et al. Wnt signaling and the blood-brain barrier. Acta Neuropathologica. 2021. ↩︎
Halleskog C, et al. Wnt signaling in neuroinflammation. Journal of Neuroinflammation. 2019. ↩︎
Zhao H, et al. Wnt6 in cancer progression. Oncogene. 2020. ↩︎